JPH11184418A - Signal tower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the durability, to simplify the structure of a cover, and to lower the manufacture cost by providing circuit boards in a cylindrical cover body for display at proper intervals and mounting a single or plural light emitting diodes which differ in light emission color on those circuit boards. SOLUTION: The display cover 13 made of a cylindrical light-transmitting material is fitted detachably to a fitting board 12 at the upper end of a column 11. Further, circuit boards 17 to 19 in, for example, a plane hexagonal shape which are sectioned by spacers 14a to 14c are electrically connected to fitting screws 14 horizontally at specific intervals while the fitting screws 15 are inserted into fitting holes bored almost in the centers. To the respective sides of the circuit boards 17 to 19, LED lamps 20 to 22 which differ in light emission color by the circuit boards 17 to 19 are fitted laterally and radially having their tips directed outwardly by the light emission colors by sandwiching the circuit boards 17 to 19 with couples of terminals.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal tower suitable for use when visually recognizing the operating conditions of various machines and devices at a distance.

[0002]

2. Description of the Related Art Conventionally, various types of machines and devices installed in a factory are mounted on the devices in order to visually confirm the operation status, that is, whether the device is operating, stopped, or has an abnormality. A signal tower having a structure as shown in FIGS. 1 and 2 is known.

In this known signal tower, ring-shaped covers 2, 3, and 4 having a color such as red, orange, or green are overlapped on a column 1 to be attached to devices and the like, and connected to each other. A tubular display cover body 5 having a different color for each cover as a whole is configured, and incandescent lamps 6, 7, and 8 are installed in central portions of the insides of the covers 2, 3, and 4, respectively. For example, during normal operation, the incandescent lamp 8 in the green cover 4 is turned on or blinking during normal operation, while the incandescent lamp 7 in the orange cover 3 is turned on or blinking during stoppage. Is that the incandescent lamp 6 in the red cover 2 blinks or blinks, thereby displaying different colors depending on the driving situation.

[0004]

Since the light source of the prior art is an incandescent lamp, the lamp has heat, and the bulb is cut off, and the incandescent lamp needs to be replaced frequently. In addition to the above, we prepare covers with different colors, overlap these and connect them in the axial direction,
There has been a problem that the structure is complicated and the production cost is high.

An object of the present invention is to significantly improve the durability, simplify the structure of the cover and reduce the manufacturing cost, and exhibit various advantages described later. To provide a signal tower.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a display cover having a cylindrical shape and a single color light-transmitting material, which is mounted on a support. , A plurality of circuit boards are provided at appropriate intervals, and one or a plurality of light-emitting diodes having different emission colors are mounted on these circuit boards.

According to the present invention, a display cover having a tubular shape and made of a light-transmissive material of a single color is mounted on a support, and a plurality of circuit boards are provided in the axial direction of the display cover with a spacer interposed therebetween. The circuit boards are provided at appropriate intervals, and each circuit board is fixed together with a spacer via a mounting screw serving as a common terminal.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the accompanying drawings. In FIGS. 3 to 6, reference numeral 11 denotes a support to be attached to various types of mechanical devices. There is no limitation on the mounting structure to be attached to the device. Various known examples apply. A mounting base 12 is provided on the upper end of the support 11, and a tubular display cover 13 is detachably mounted on the mounting base 12 by screwing, locking, or other means. The shape and structure of the display cover 13 are not limited, but the color and material are desirably made of, for example, white, milky white, transparent, or translucent synthetic resin. is necessary. The overall shape of the display cover body 13 may be, for example, a front-facing shape with a rounded upper end in addition to a cylindrical shape having a flat upper end as shown in the figure. Part 11
And a flat or Kamaboko-shaped lid may be detachably attached to the upper end. In this case,
The lower end of the display cover 13 serves as a mounting base.

At substantially the center of the mounting base 12, cylindrical spacers 14a, 14b, 14c are provided with mounting screws 1 therein.
5 is inserted in the support 11 or the mounting base 12 in the axial direction by being inserted therethrough.
4a, 14b, and 14c, for example, circuit boards 17, 18, and 19 each having a planar hexagonal shape are provided at predetermined intervals while inserting mounting screws 15 into mounting holes (not shown) provided in substantially central portions thereof. And is electrically connected and mounted to the mounting screw 15 in a horizontal state. Reference numeral 16 denotes a tightening tilt. On each side of each of the circuit boards 17, 18, and 19, a plurality of LED lamps 20, 21, and 22 having different emission colors for each of the circuit boards 17, 18, and 19 are provided. By sandwiching the light-emitting elements 18 and 19, the light-emitting elements are mounted radially in the lateral direction with their respective ends directed outward for each emission color. When implemented in this manner, there is an advantage that the axial length of the entire display cover body 13 can be reduced because the installation intervals of the circuit boards 17, 18, and 19 can be reduced. In the drawing, the LED lamp 2 mounted on the lowermost circuit board 17 is shown.
0 is blue light emission, LED mounted on the middle circuit board 18
The lamp 21 emits red light, and the LED lamp 22 mounted on the upper circuit board 17 emits green light.
In addition, the shape of each circuit board 17, 18, 19, and each LED lamp 20 mounted on this circuit board 17, 18, 19,
How to mount 21, 22 and the shape, and each circuit board 17,
The number of light emitting diodes 18, 19, the number of light emitting diodes, the selection of the light emitting color, the upper and lower positions, and the like are not limited to those shown in the drawings. It can be of various shapes, structures and combinations. For example, an LED lamp can be erected or suspended on each circuit board, and a chip-shaped light-emitting diode may be used. it can. Further, the shape of each of the circuit boards 17, 18, 19 can be a disk shape or another polygonal shape. The emission color of each of the LED lamps 20, 21, and 22 is yellow, and is selected as needed.

The resistors 23, 24, and 25 shown in FIG. 6 are mounted on each of the circuit boards 17, 18, and 19, or are used by being mounted in the middle of the lead wires 26, 27, and 28 shown in FIG. . The mounting screw 15 has a role of a common terminal at the same time, but is not limited to this embodiment. It may be configured to have a head and to be screwed to the mounting base 12 or the support 11 from above. Further, a common terminal may be separately provided in addition to the mounting screw.

Therefore, according to the signal tower of the present invention, the LED lamps 20 mounted on the circuit boards 17, 18 and 19 installed in the display cover 13, respectively.
If the lights are turned on in accordance with the operation status of the devices for each of the devices 21 and 22, the light of each color is emitted and displayed outside through the display cover 13 made of a light transmitting material.

[0012]

The present invention is configured as described above.
The following effects can be obtained.

Since a light emitting diode is used as a light source, there is no fear of running out of the bulb as in an incandescent lamp, so that maintenance is facilitated, the problem of heat generation is eliminated, and it is not necessary to consider the influence of heat. An electronic circuit such as a circuit for lighting or blinking a light source conventionally installed outside the signal tower can be mounted on the base.

Since the display cover can be made of one kind of material, it is lighter and has a simpler structure than conventional ones, and can be made more compact and inexpensive.

Further, by sealing a plurality of light emitting diodes having different emission colors in one LED lamp with a resin,
This makes it possible to further reduce the size of the signal tower.

[Brief description of the drawings]

FIG. 1 is a front view of a conventionally known signal tower.

FIG. 2 is a longitudinal sectional view of the conventionally known signal tower shown in FIG.

FIG. 3 is a front view of the signal tower according to the present invention.

FIG. 4 is a plan sectional view of the signal tower shown in FIG. 3;

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a circuit diagram of the signal tower shown in FIGS. 3 and 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Prop 12 Mounting base 13 Display cover 14a, 14b, 14c Spacer 15 Mounting screw 17, 18, 19 Circuit board 20, 21, 22 LED lamp

Claims (2)

[Claims] 1. A display cover body having a tubular shape and made of a light-transmissive material of a single color is mounted on a support, and a plurality of circuit boards are provided at appropriate intervals inside the display cover body. A signal tower, wherein one or a plurality of light-emitting diodes having different emission colors are mounted on the circuit board of (1). 2. A display cover body having a tubular shape and made of a light-transmissive material of a single color is mounted on a support, and a plurality of circuit boards are appropriately spaced from each other via a spacer in an inner axial direction of the display cover body. A signal tower, wherein the circuit board is provided separately and fixed to the support or a mounting base attached to the support via a mounting screw serving as a common terminal together with a spacer.